. 2022 Feb 7;10(2):393. doi: 10.3390/biomedicines10020393

Table 5.

Modification of ATPase activities in cardiac sarcolemma and myofibrils upon incubation with HOCl for 30 min in the presence or absence of L-methionine.

Parameters	Control	0.1 mM HOCl	HOCl Plus 10 mM L-methionine
A. Sarcolemma:
Na⁺-K⁺ ATPase (µmol Pi/mg/h)	18.86 ± 2.03	2.16 ± 1.05 *	13.31 ± 2.44 †
MDA content (nmol/mg protein)	51.64 ± 3.97	67.33 ± 3.97 *	48.2 ± 3.59 †
Sulfhydryl group content (nmol/mg protein)	64.84 ± 6.36	28.67 ± 4.40 *	55.86 ± 5.72 †
B. Myofibrill ATPase (µmol/mg/h)
Mg²⁺ ATPase	2.80 ± 0.12	9.51 ± 0.16 *	3.79 ± 0.16 †
Ca²⁺-stimulated ATPase	10.96 ± 0.15	5.73 ± 0.31 *	11.64 ± 0.12 †

The data are taken from our papers (Kato et al. [127] and Suzuki et al. [125]). MDA, malondialdehyde. * p < 0.05 vs. respective control; † p < 0.05 vs. respective HOCl.